31898680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{72497}}^1$

素因数の和:72519

約数の個数: 32

約数和(自身を含む): 78297840

約数和(自身を除く): 46399160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 72497, 144994, 289988, 362485, 579976, 724970, 797467, 1449940, 1594934, 2899880, 3189868, 3987335, 6379736, 7974670, 15949340, 31898680]

約数ペア:

[(1, 31898680), (2, 15949340), (4, 7974670), (5, 6379736), (8, 3987335), (10, 3189868), (11, 2899880), (20, 1594934), (22, 1449940), (40, 797467), (44, 724970), (55, 579976), (88, 362485), (110, 289988), (220, 144994), (440, 72497)]